Flood Risk management

1
Flood Risk management

• History/Mission/Policies

2
Flood Control vs. Flood Risk Management

• Floods have occurred throughout time, and are not
  necessarily damaging
• Early legislation authorized flood control in
  response to devastating losses
• We cant really control floods, but we can modify
  water flows in space and time
• Corps mission is to assist with and provide
  leadership in managing flood risk this includes
  making Federal investments for reducing damages
  from floods, hence FDR

3
Flood Risk Management Plan

• A complete description of a plan includes all
  structural, nonstructural, legal, and
  institutional features, both proposed and
  existing, that contribute to the intended flood
  control outputs. EP 1165-2-1 30 Jul 99, 13-8.

4
Flood Risk Management Beginnings

• Swamp Acts 1849, 1850
• Mississippi River Commission 1879
• California Debris Commission 1893
• Flood Control Act of 1917
• Flood Control Act of 1936

5
Federal Interest Development

• Flood Control Act (FCA) of 1944
• Section 206 of the Flood Control Act of 1960
• Executive Order 11988
• Section 73 of Public Law 93-251 (FCA 74)
• Water Resources Development Act (WRDA) of
  1986

6
Nonstructural Highlights

• FCA 1938land acquisition approved
• National Flood Insurance Act (1968)
• PS (1973)planning process to include
  nonstructural
• Sec. 73 WRDA 1974required consideration of
  nonstructural measures for flood control

7
Nonstructural Highlights

• EO 11988 (1977)agency role in flood plain
  management
• Revisions to PS (1979)nonstructural plan
  required
• Principles and Guidelines (1983)

8
Nonstructural Highlights

• WRDA 1986 Established local cost sharing
  advantages over structural
• WRDA 1986 Section 402, requires local
  participation in NFIP for Corps flood projects
• WRDA 1986 Section 905, requires that
  feasibility reports include a description of a
  nonstructural alternative to the recommended plan
  when such plan does not contain significant
  nonstructural features
• WRDA 1999 - Section 219, changes benefit
  computation

9
Corps Programs for Flood Risk Management

• General Investigations
• Continuing Authorities
• Section 14 - Emergency Streambank and Shoreline
  Protection (1946)
• Section 205 - Flood Damage Reduction (1948)
• Section 208 - Snagging and Clearing (1937)
• Operation and Maintenance
• Section 216 - Review of Completed Projects (1970)

10
Evolution of Flood Risk Management Authorities
and Policies

• Flood Control to Flood Damage Reduction
• Limited measures to a broad array
• Local projects to Nationwide programs
• Single purpose to multi-purpose
• Growing emphasis on non-structural and flood
  plain management for comprehensive flood risk
  management

11
Policies You Need To Know

• Considered local drainage issue unless
• 800 cfs at the 10 year event, unless
• 100-year gt 1,800 cfs
• 1-1/2 square miles drainage basin
• Land development benefits cant be claimed for
  structural projects, however non-structural
  evacuation projects may claim benefits for new
  uses of evacuated floodplain
• Risk-based analytical framework to be used

12
Policies You Need To Know (cont.)

• Cost sharing for flood damage reduction
• Cost sharing advantages for nonstructural
• Flood Plain Management Plans requirement for
  locals
• Section 308, WRDA 1990 New structures built
  after June 1991 must have first floor above
  100-year flood elevation, or cannot be included
  in benefit calculations

13
Flood Risk Management Cost Sharing

• Non-structural
• Local sponsor must provide 35 of total project
  costs
• Structural
• Local Sponsor must provide 5 up front in cash
• Local Sponsor must provide LERRD
• Local Sponsor must provide additional cash to
  bring the local share up to 35 of the total
  project cost
• Local Sponsors share is limited to 50

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For Further Information

• Contact the National Planning Center of
  Expertise for Flood Risk Management at CESPD
• Attend other Flood Risk Management PROSPECT
  Course
• Check the IWR Planning References CD
• Visit the FRM PCX Website at www.spd.usace.army.m
  il/frm-pcx

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Flood Risk Management Planning Center of
Expertise (FRM PCX)

• Director SPD Planning CoP POC
• Dan Sulzer (Acting)
• Program Manager
• Eric Thaut
• Core team composed of ERDC, HEC, IWR, LRD, MVD,
  NFPC, NWD, and SPD technical leaders members
• Virtual regional and national resources

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Take Away Points

• The perception of what we do has changed from
  Flood Control to Flood Damage Reduction and is
  now moving towards Flood Risk Management (FRM)
• There has been a growing emphasis on
  non-structural solutions and flood plain
  management
• There are several policies that are critical to
  plan formulation of flood damage reduction
  measures